- •Unit 1: Fractals
- •Identify the stressed sound in each word as in the example.
- •Put the following words into the corresponding column according to the sound of the adjective or regular past ‘ed’.
- •Organize the information from the text in the form of a mind map or a flow chart. For example, types properties
- •Fractals
- •Work in pairs and see if you can remember the following words and phrases. Take turns to ask each other. Use the Mini-dictionary (unit 1) if necessary.
- •In the text, find one example of the passive infinitive, five examples of verbs in the passive voice.
- •Explain the meaning of the words and phrases below.
- •Find the words in the text which match the following definitions.
- •Match the words and phrases (1-10) from the text with their definitions (a-j).
- •Fill the gaps in the sentences with the correct words from the text. The first letter has been given.
- •Fill the gaps with the words given below.
- •Find and cross out extra words in the text. There are 10 unnecessary words.
- •Match the words in the left-hand column with the words in the right-hand column to make phrases from the text. Use each word only once. Translate the collocations into Ukrainian.
- •Put the phrases and words in the correct order to make meaningful sentences. The first word of each sentence starts with the capital letter.
- •Fill in the gaps with a suitable preposition.
- •Work in pairs. Look through the applications if fractal analysis below and put them into the corresponding row of the chart.
- •Put the words in brackets into the correct form.
- •One of the underlined parts of a sentence contains a mistake. Find it and correct.
- •Rewrite the sentences using the passive voice where possible. Omit the agent where it can be omitted.
- •. Put the verbs in brackets into the correct passive form.
- •Fill in ‘by’ or ‘with’.
- •Help your friend to translate the following sentences into English.
- •Discuss the following questions in small groups or pairs.
- •Prepare a short two-minute presentation for your classmates on one of the topics below. You may use the information from the unit or do some research on the Internet.
- •Translate the following sentences into Ukrainian for your friend’s poster.
- •Using the information from this unit and further reading section write your own short wiki entry about fractals. (up to 200 words).
- •Do the quiz to find out how much you found out about fractals. (Problem-Solving, unit 1)
- •Fractals
- •Fractal patterns spotted in the quantum realm
- •Fractals in the biological sciences
- •The common prepositions in english.
- •Passive voice
Organize the information from the text in the form of a mind map or a flow chart. For example, types properties
Compare your mind map with your partner’s.
Fractals
A fractal is generally a rough or fragmented geometric shape that can be split into parts, each of which is a miniature replica of the whole. Roots of mathematical interest in fractals can be traced back to the late 19th century; however, the term "fractal" was coined by the French mathematician Benoît Mandelbrot in 1975 from the Latin fractus meaning "broken". Fractals connote fraction, fracture and fragment. 1) …. A mathematical fractal is based on an equation that undergoes iteration, a form of feedback based on recursion.
2)…. The fractal dimension, D, is a statistical quantity that gives an indication of how completely a fractal appears to fill space, as one zooms down to finer and finer scales. Mathematicians tend to rank fractal dimensions on a series of scales between 0 and 3. One-dimensional fractals (such as a segmented line) typically rank between 0.1 and 0.9, two-dimensional fractals (such as a shadow thrown by a cloud) between 1.1 and 1.9, and three-dimensional fractals (such as a mountain) between 2.1 and 2.9. 3) .… Some studies in perceptual psychology have found that people prefer fractal dimensions similar to those found in nature.
Fractals can be deterministic or stochastic. They can also be classified according to their self-similarity. There are three types of self-similarity found in fractals:
Exact
self-similarity: the fractal appears identical at different scales.
Fractals defined by iterated function systems often display exact
self-similarity.
Quasi-self-similarity: quasi-self-similar fractals contain small copies of the entire fractal in distorted and degenerate forms. Fractals defined by recurrence relations are usually quasi-self-similar.
Statistical self-similarity: the fractal has numerical or statistical measures which are preserved across scales. Random fractals are examples of fractals which are statistically self-similar.
4) ….
Because they appear similar at all levels of magnification, fractals are often considered to be infinitely complex. Natural objects that are approximated by fractals to a degree include clouds, mountain ranges, lightning bolts, river networks, coastlines, snowflakes, various vegetables and plants, animal coloration patterns, neurons, the respiratory and circulatory systems. 5) ….
Fractal geometry is a powerful tool for uncovering secrets from a wide variety of systems and solving important problems in applied science. 6) …. Fractal analysis is now widely used in all areas of science, such as astrophysics, medicine, meteorology, architecture, study of soils, seismology, enzymology, computer graphics, biology, robotics, economics, finance, engineering, and even music. Fractal principles are also at work in arts or crafts, such as some Dalì and Pollock paintings, works of Maurits Escher, mandalas, mosaics, tiling designs, and floor decorations.
Fractals are purely a wonder – too irregular to be described by Euclidean geometry; iterative and recursive and seemingly infinite.
